Induction-coil-heat-dissipating structure



A. A. KENT.

INDUCTION COIL HEAT DISSIPATING STRUCTURE. APPLICATION mso 3.11. 1920.

1,385,624. Patented July 26, 1921.

I N VEN TOR MMM Miafiw ATTORNEY.

UNITED STATES PATENT OFFICE.

. ARTHUR ATWATER KENT, or ABDMORE, PENNSYLVANIA.

INDUCTION-COILHEAT-DISSIPATING STRUCTURE.

27p itmag concern:

QBQ it l cnow n that I, ARTHUR ATWATER a,citizen of the United States, residing d- Ardmore, county of Montgomery, and, 1 of Pennsylvania, have invented ne w andnseful improvements in Indnetionecoil-Heat-Dissipating Structures,

eigai duetia (if whichtthej following is a specification. ;:,My,inventi on relates to means for carryinggpif heat from a winding of electrical appgigatus, and particularly from a winding 0' yyapdingsof an induction coil, especially 3w, ,enprgforming part of an ignition system for igniting sparks to an internal com 1stion;,engine a winding or windings l, particularly when employed in a closed circuit system, often having generated therein excessive heat, es pecially when the engine stops in such position,thaQ-the,interrupter contacts leave the p i ary manial e .HMN; JlYeti ni e d n, a heat dissipat 1ng,st17uctur comprising means preferably oigoodheat conductivity disposed adjacent on more r less;embracing the winding or windings toabsorb heat therefrom and con duct it awa ;.from the winding or windings and delivering-it to another medium, for example, asolid or liquid medium surround- 111% or immersing the structure.

. or-an illustration of some of various forms invention may take, and of an example'of-application thereof, reference is tojbe hadto the accompanying drawing, in h: 'fl. a: s.

Figurejl is a cross sectional view, partly in plan, of induction coil structure embodys my i e t n a Fig. 2 is an edge view of a heat dissipating member forming part of the structure .IFig.-'3. is 'a side View of the structure shown in Fig. 2.

Fig. 4 is a cross sectional view, partly in plan, of induction coil structure embodying a',modified;form of heat dissipating structure. I My is an edgeviewof modified form of heat dissipating member employed in Fig.4:.

.{fFigx- 6- is'a :side view of the structure shownin Fig. 5.

Specification of Letters Patent. Patented July .26, 1921 Application filed februaly 17, 1920. "Seria1 Nd. 359,396. 1 T V view, respectivelmbi iifl i'therniodificatioii' of heat conducting structure.

Referring to igs. 1;to v3, l iislals'pool or tube surrounding thefcorefl of ,m'a'gnetii able material, as iron lament equivalent;

In the example illustrated, the magnetic circult is closed thrq ghthlareqt ngfilar;yoke

structure 3, igifl 'ls ile fintefve' sjb tween the, yoke and gone, end; time eo'refllf f' Upon the tube :lis ,dispos'ed'the' highten sion'secondary winding, ;S. difsposed"between H conductivity, inth'ejform' ofajwasher or w disk having the hole ,j'iembracin s poll and, in the exampl ei illiu'stratedflyfig'be tween each primary coil' and 'the'secondary S, though it will be understood'tliat' s uch member may be disposed in any equivalent or other suitable, iaositien or ,relationtf -Extending in from its periphery to any},suitable distance are the slits 8 wherebyjfthere are formed fins or flanges 9, all'orsome of which may suitablepositionorgextenta; The member f6 is circumferentially, discontinuous, particularlyfo r the relation described Where it surrounds the coreof an induction coil, infthatit 'sliall no't constitute a short eircuited turn ;or memberinmhich electrical energy ,vvquld ,be uselessly dissipated by induction. 5 To so render the memher 6 discontinuous there {is formed: therein the slot 10, asingleslot. leaving the structure 6 unitary, it being understood,. however, that the member 6 maybe divided into any suitable number of parts distributed circumferentially. of the spool 1. i a

be bentto right for left 'tdany H When heat is developedin the adjacent sand or the like, in which the induction coil structure-is immersedcr embedded, as described, for example, in the ,co-pendjng application of William A.- Evans, ,Ser. No. 348,603.

By recourse to the heat conducting strucother, as upon a dwell, and the resistance of the circuit should be relatively low, considerabie heat will be liberated in the coils, raising; ales tem erature-be a rise in tem} perature to undesired or dangerous point is revented by conducting away heat y the abotfe uesetibea structure.

WhiIe Ihave describedthe structure as odiipeiatiiig' 'pai'ti'cilljarly with 'the primary winaieg i will be unseed d that it may us similarlyboopera'te with the secondary winding, di xw ith any other winding oi electripalapp'i atusbf other or diiierenttype In 'Figs."4 to 6 inclusive is illustrated a modified structure wherein the member 6 is right and left over ofifadjiicent to 'bbth primary and secondary windings, orf into any other suitable osition or iela itih. Furthermore, the merrier 6 may ,be provided with the inner flange-Z 11, termed a corlifiaiige', surrounding the s "061 land disposed between it and the s'urio'undin primary winding, whereby fun theifheat'fiis i'bi g surface is enews presented to eat may be In'tis instance again the member 6 is slotted bompletely throngh, asby slot 10, which also 'eyers 'the cylindrical flange 11, 'whichaccbrdingly also is c'i'rcumfere'ntially intiomp'lete'f,"

Iii lieu o rodi'l'cin'g fins, by slittingc'the heat eonducti dg member, the same may be formed as indicated in Figs. 7 and 8, wherein the r riernber 6 terminates in a laterally extending tlan'g 1Q, the structure being com 'pletely cut slot 10 to preiient formation of a closed circuit.

In Figs; 9 and 1 0is a structuresimilar to that shown in Figshifl and 8, except that thcieis provided'in addition a core flange 11, which with thejijemai nder of the struclure is completely cut through by a slot 10.

What I claim "181+- '1. The combination with a current conducting winding, ofmeans for conducting heat therefrom comprising a member'lying adjacent said windin'g' iii heat absorbing re lati'on thereto and having fins lying beyond said winding,-said member having a core flange surrounded by said winding.

2; The combination with an induction coil winding traversed by fluctuating current, of means for conducting heat therefrom comprising a circumferentially "discontinuous heat conducting member disposed adjacent thereto in heat absorbin relation aiidfextehdin'g beyond'said'w'm mg: I

posed side by side,

3. The combination with an induction coil winding traversed by fluctuating current, of means for conducting heat therefrom comprising a circumferentially discontinuous heat conducting member disposed adjacent thereto in;heat absorbing relationand extending beyond said winding, said member having a circumferehtially discontinuous core flange surrounded by said winding.

4. The combination with an induction jcoil comprising primary and secondary windings, of heat dissipating means comprlsing a'c'ircumier'entially discontinuous metallic member disposed in heat a'bsorbing relation. with respect to one'of saii'd windings and exteiidin'g'beyon'd the amete position to dissipate the heat conducted therethrough';

5Q'T he combiiiation 'wi comprising primary and secondary windings, of heat dissipatin 'mearis comprisin a 'circumfereiitially discontiiiuo'iis metallic member disposed in heat absdibiiig relation than induction coil 7 with respect to 'oii'e'of said'windings and ex- 6. The 'con'ibinationrwith an induction coil comprising primary comprising 'a heat conducting tric ally independent 6f" aiiti tween said coils in heat absorbing iel'a- 'tion with respect to at least one of them,

said member eiztending beyond said coilto dissipate heat delivered thereto; A i 7. Thecombination with-Sin inductioii eon comprising primary and secondary boils disposed side by side, of heattlissipatihg means comprising a heat conducting 'member electrically'independent of and disposedbetw'een said coils and in heat absorbing relation with respect to at least one of them, extending beyond said coil to dissipate heat delivered thereto, said member terminating in fine extending in diiierent directions.

8. The combinationwith an induction coil said member comprising primary and seeondary'coils disposed side by side, of heat dissipating means comprising a heat conducting member disposed between said coils and in heat ab sol-hing relation with respect to at least one of them, said member extendin'g' beyond said coil to dissipate heat delivered thereto, said member terminating in fins disposed respectively, over said primary and secondary coils. i

9. The combination with an induction ooil comprising primary andse'condary coils "disposed side by side, of heat dissipating means comprising a heat conducting member dis posed between said (foils-and iii heat-absorb ing relation with respect to at least "(meet them, said member having a core flange surrounded by said one of said coils, said member extending beyond said one of said (oils to dissipate heat delivered thereto, said member terminating in fins disposed over said one of said coils.

10. The combination with an induction coil comprising primary and secondary coils disposed side by side, of heat dissipating means comprising a heat conducting member disposed between said coils and in heat absorbing relation with respect to at least one of them, said member having a core flange surrounded by said one of said coils, said member extending beyond said one of said (oils to dissipate heat delivered thereto, said member terminating in fins disposed, respectively, over neighboring primary and secondary coils.

In testimony whereof I have hereunto aflixed my signature this 16th day of Feb- 20 ruary, 1920.

ARTHUR ATW'ATER KENT. 

